# The 2009 Europhysics Conference on High Energy Physics

Jul 16 – 22, 2009
Kraków, Poland
Europe/Warsaw timezone

## Search for the rare decay $D^{0} \rightarrow \gamma \gamma$ and improved measurement of $D^{0} \rightarrow \pi^{0} \pi^{0}$

Jul 17, 2009, 5:00 PM
15m
Middle Lecture A (Kraków, Poland)

### Middle Lecture A

#### Kraków, Poland

The Auditorium Maximum of the Jagiellonian University 33 Krupnicza Street 31-123 Kraków
Unified Theories, Strings, Non-perturbative QFT

### Speaker

James Morris (The Ohio State University)

### Description

We present preliminary results of the search for the doubly-radiative decay $D^{0} \rightarrow \gamma \gamma$ and the measurement of the branching fraction of its associated background $D^{0} \rightarrow \pi^{0}\pi^{0}$ in a data sample corresponding to an integrated luminosity of ~470fb$^{-1}$ collected with the BaBar detector at the PEP-II asymmetric $e^{+} e^{-}$ collider at SLAC. The long-range, FCNC $\gamma \gamma$ decay provides a test for physics beyond the standard model.

### Primary author

James Morris (The Ohio State University)

### Co-authors

Amir Rahimi (The Ohio State University) Honscheid Klaus (The Ohio State University) Joseph Regensburger (The Ohio State University)

### Presentation materials

There are no materials yet.